Improvement in hand-stamps



^ P. O. WRIGHT.

Improvement in Hand Stamps.

Pat'ented June 20,1871.

UNITED STATES PATENT OFFICE.

PARKER o. WRIGHT, 0E oswEeo, NEw YORK.

IMPROVEMENT IN HAND-STAMPS.

specification forming part of Letters Patent No. 116,132, dated June 2o,1871.

To all whom it may concern: p

Be it known that I, PARKER O. WRIGHT,

`of Oswego, in the county of Oswego and State of New York, have inventeda new and Improved Rotary Canceling-Stamp, of which the following is aspecication:

Nature and Object of the Invention.

' to be compressed in the movement of the lever as itis lifted by theinclined edge of each cam. The lever may be made to revolve, and,passing successively over the cams, drop at different points insuccession so as to fall alternate ly upon an inking-pad and upon theletter or other article to be stamped; or the lever may be keptstationary to fall always at the same point, and be lifted by a movementof the cams about their center, one or more inkingrollers in such casebeing made to move with the cams and pass over the face of the stamp.rEhe object of my invention is to facilitate the rapid stamping ofletters and other documents by a device which shall be self-inking, andwhich may be made to operate very rapidly by merely turning a crank,either by hand or other suitable motive-power.

The accompanying drawing is a view in perspective of my improvedstamp-canceler, arranged With a revolving lever. A is the lever; B, anupright revolving spindle, having its lower bearing in a suitablemetallic plate or step in the table or stand G, and its upper bearing inthe end of a bracket, D, projecting from a standard or pillar, E,likewise firmly secured to the stand (l. The spindle B passes through aslot in one end of the lever A, which is pivoted to the spindle by atransverse pin so that its long 'arm may have vertical play. F F areradial arms, secured to the standard B so as to proj ect therefrom inopposite directions over the lever A and in a vertical plane coincidenttherewith. Between each lever F and the end of the arm A beneath it isconfined a spiral or other suitable form of spring, S. rllhe spring S,bearing upon the longer arm of the lever to which the stamp is attached,is more powerful than the opposite spring S, and serves, when the leverAis released after being lifted from the cam, to carry down the stampforcibly upon the letter or paper to be impressed, while the action ofthe opposite lever S causes a 'slight rebound of the stamp after it hasproduced its impression. G is the cancelingstamp, of any desired form ordescription, secured to the end of the long arm of the lever A so as tobe readily detached therefrom at pleasure. A variety of stamps may bethus used with the lever A. H is a very slight pin or sharp point on thelower edge of the stamp, which will engage the letter or other paperwhich has been stamped sufficiently to carry or slide itforward as thestamp is carried forward in the revolution of the lever, and thus removeit from the stamping-pad, making room for another. K is a stamping-pad,of leather, rubber, or other suitable hard and tough yet elasticmaterial and K is an inking-pad, placed at an opposite point, and uponwhich the stamp is properly inked. The spindle B is made to revolve bymeans of a horizontal shaft, L, hav ing its bearings at one end in thestandard E, and at the other in the bracket D, and which is connectedwith the spindle by means of suitable bevel-gear, as illustrated in thedrawing.

The outer end ofthe shaft L is provided with a crank, M, by which it maybe made to revolve, and with a pulley, N, whereby it may be connectedwith any suitable motive-power. P is a circular ange, projecting upwardfrom the table C and surrounding the foot of the spindle B as itscenter. This'iange ,is so cut away as to, form two inclined planes orcams of equal length, which, upon attaining their highest point, are cutaway abruptly in a perpendicular line, as illustrated in the drawing.rEhe stamping-pad K and the inking-pad K are placed, respectively,nearly opposite the highest point of each cam, so that when the leverAin its revolution passes beyond said point it will in each case dropforcibly upon the one or the other. The mutual relation of thepivot-point of the lever A, the cam-ange P, and the springs Sl S, issuch as that the longer arm of the lever will be gradually lifted afterhaving rested upon either pad, compressing thereby the spring S', andthen be suddenly released just as it reaches the opposite pad, bringingthereby into operation the resilient power of the sprin g to causethestamp on the end of the lever to lr'all with a powerful blow upon thepad. Thus, by a revolution of the spindle B, obtained by turning thecrank M, the stamp may be made to fall successively and as rapidly asdesired upon the inkingpad K to be inked, and then upon a letter orpaper placed upon the pad K so as to produce an impression thereon.

It is evident that substantially the same effect may be produced bypivoting' the lever A, as described, to a stationary support, so that itshall always rise and fall at the same point, and then causing thecircular cam iiange P to revolve in a horizontal plane beneath it. Theiiange may be thus made to revolve by means of the spindle B by placingthe fiange upon a circular plate in or on the table C, (indicated bydotted lines in the drawing,) to which the spindle B is connected andsecured; the iinmovable support for the lever A and the springarms F Fbeing obtained independently of the spindle, either by means of a hollowshaft encircling the revolving spindle or by means of brackets spannin gthe revolving plate. In this case the stamp is to be inked by means ofinkin g-rollers so secured to the revolving camplate as to pass over theface of the stamp as it is lifted to its highest point and just beforeit drops.

Claim.

I claim as my invention- A pivoted lever, A, having vertical play, incombination with a canceling-stamp, G, a circular cain-liange, P, andone or more springs, S S, when the lever and the cam-ilange are arrangedsubstantially as described, so that a revolution of the one or the othershall produce a successive lifting and dropping of the lever and stamp,in the manner and for the purpose herein set forth.

PARKER O. WRIGHT.

Witnesses:

JOHN H. MUNsELL, CHAs. L. CLARK.

